Modular hip joint implant

Abstract

A modular hip joint implant and associated method. The modular hip implant includes a femoral stem having a proximal surface defining a dovetail groove having first and second female wings, and a neck component having a distal surface defining a semi-dovetail projection engaging the dovetail groove. The projection includes a single male wing mating with the first femoral wing.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a divisional application of U.S. patent application Ser. No. 10 / 862,150, filed on Jun. 4, 2004. The entire disclosure of the above application is incorporated herein by reference in its entirety.INTRODUCTION[0002]Modular prosthetic devices can be used in total or revision hip procedures. Modularity has the advantage of added flexibility and choice, enabling the practicing surgeon to select appropriately sized interconnected components for specific conditions and patients. Nevertheless, some of the available modular components can still be bulky or cumbersome for implantation with current minimally invasive procedures, which require small-sized incisions.[0003]Accordingly, improved modular hip joint implants are still desirable.SUMMARY[0004]The present teachings provide in various embodiments a modular hip joint implant. The modular hip implant can include a femoral stem having a proximal surface defining a dovetail gro...

AI Technical Summary

Benefits of technology

[0002]Modular prosthetic devices can be used in total or revision hip procedures. Modularity has the advantage of added flexibility and choice, enabling the practicing surgeon to select appropriately sized interconnected components for specific conditions and patients. Nevertheless, some of the available modular components can still be bulky or cumbersome for implantation with current minimally invasive procedures, which require small-sized incisions.

[0005]The present teachings also provide a modular hip joint implant that includes a femoral stem and a neck component. The femoral stem has a proximal surface that defines a dovetail groove with first and second female wings. The neck component has a distal surface that defines a semi-dovetail projection having a single male wing. The semi-dovetail projection slidably interlocks with the dovetail groove such that a keyway is defined between the second female wing and the neck component. The implant can include a key wedgeable in the keyway to lock the femoral stem and the neck component against relative sliding.

Problems solved by technology

Nevertheless, some of the available modular components can still be bulky or cumbersome for implantation with current minimally invasive procedures, which require small-sized incisions.

Images